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Create wxAccessible object on demand in wxDVC

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Create wxAccessible objects only in response to calls to GetOrCreateAccessible() to save resources.
This commit is contained in:
Artur Wieczorek
2016-10-16 23:48:27 +02:00
parent 90e1769569
commit cfe0eaa7f2
4 changed files with 56 additions and 23 deletions
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60
src/generic/datavgen.cpp
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@@ -241,12 +241,6 @@ public:
wxDataViewHeaderWindow(wxDataViewCtrl *parent)
: wxHeaderCtrl(parent)
{
#if wxUSE_ACCESSIBILITY
// Under MSW wxHeadrCtrl is a native control
// so we just need to pass all requests
// to the accessibility framework.
SetAccessible(new wxAccessible(this));
#endif // wxUSE_ACCESSIBILITY
}
wxDataViewCtrl *GetOwner() const
@@ -276,6 +270,16 @@ public:
}
}
#if wxUSE_ACCESSIBILITY
virtual wxAccessible* CreateAccessible() wxOVERRIDE
{
// Under MSW wxHeadrCtrl is a native control
// so we just need to pass all requests
// to the accessibility framework.
return new wxAccessible(this);
}
#endif // wxUSE_ACCESSIBILITY
protected:
// implement/override wxHeaderCtrl functions by forwarding them to the main
// control
@@ -4668,10 +4672,6 @@ bool wxDataViewCtrl::Create(wxWindow *parent,
m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
#if wxUSE_ACCESSIBILITY
SetAccessible(new wxDataViewCtrlAccessible(this));
#endif // wxUSE_ACCESSIBILITY
// We use the cursor keys for moving the selection, not scrolling, so call
// this method to ensure wxScrollHelperEvtHandler doesn't catch all
// keyboard events forwarded to us from wxListMainWindow.
@@ -5495,7 +5495,12 @@ void wxDataViewCtrl::DoEnableSystemTheme(bool enable, wxWindow* window)
Base::DoEnableSystemTheme(enable, m_headerArea);
}
#endif // !wxUSE_GENERICDATAVIEWCTRL
#if wxUSE_ACCESSIBILITY
wxAccessible* wxDataViewCtrl::CreateAccessible()
{
return new wxDataViewCtrlAccessible(this);
}
#endif // wxUSE_ACCESSIBILITY
#if wxUSE_ACCESSIBILITY
//-----------------------------------------------------------------------------
@@ -6236,15 +6241,31 @@ wxAccStatus wxDataViewCtrlAccessible::GetFocus(int* childId, wxAccessible** chil
*childId = row+1;
*child = NULL;
}
else if ( dvWnd->HasFocus() )
{
*childId = wxACC_SELF;
*child = this;
}
else
{
*childId = 0;
*child = NULL;
// First check if header is focused because header control
// handles accesibility requestes on its own.
wxHeaderCtrl* dvHdr = dvCtrl->GenericGetHeader();
if ( dvHdr )
{
if ( dvHdr->HasFocus() )
{
*childId = wxACC_SELF;
*child = dvHdr->GetOrCreateAccessible();
return wxACC_OK;
}
}
if ( dvWnd->HasFocus() )
{
*childId = wxACC_SELF;
*child = this;
}
else
{
*childId = 0;
*child = NULL;
}
}
return wxACC_OK;
@@ -6289,7 +6310,8 @@ wxAccStatus wxDataViewCtrlAccessible::GetSelections(wxVariant* selections)
return wxACC_OK;
}
#endif // wxUSE_ACCESSIBILITY
#endif // !wxUSE_GENERICDATAVIEWCTRL
#endif // wxUSE_DATAVIEWCTRL